World Heritage Day. 18th AprilWorld Heritage is the shared wealth of humankind. Protecting and preserving this valuable asset demands the collective efforts of the international community. This special day offers an opportunity to raise the public's awareness about the diversity of cultural heritage and the efforts that are required to protect and conserve it, as well as draw attention to its vulnerability.http://www.gdrc.org/heritage/world-heritage-day.htmlhttp://www.gdrc.org/doyourbit/18_4-heritage.html